I am not sure why but I gathered that the OP is from a Spanish speaking country and that language is not supported.
What I meant by video is the game's output video stream as you would have to read that in some fashion to automate the screen grabs for the OCR process.
This project of yours is quite interesting. I can see so many uses for it. Non localized console games for example.

I agree this project needs to be out there, it can improve accessibility for more than just this game.
This "add-on" for lack of a better way to put it is far different than the "xxx club" in that it takes freely displayed information by the game, ie; the image display, and reads it to find the text and translates the text. Where as "xxx club" displays semi hidden data, ie; data stored in memory unless read from a stored file. It provides no advantages that players do not already possess, IE, understanding the dialogue. In short I proclaim this TOS safe. Not that I can make that call but make it I did :P.

I personally have not looked at the OCR market offerings so I am not sure how many programs offer similar functionality, but there is a reason OCR services are expensive, and if this is a unique offering keep it up, it could go somewhere.